Feature Request: Allow modules to register navigation items, including external URLs.

I have a couple of modules, but one specifically adds some extra depth to the system (Price Lists). The module writes to a URL within the domain, but there's no way to direct a user from the dashboard to the module's URL. Conceptually, it would look like this:
Navigation::register([
'label' => 'Price Lists',
'url' => '
'icon' => 'list',